There is an indication of a low-pressure system in the Bay of Bengal on September 2 and 3. As per current indications, rain is expected in the northern districts of Kerala during Onam celebrations. In the subsequent days, rain may become more widespread across the state. "Heavy rainfall (7cm to 11cm in 24 hours) very likely to occur at one or two places in Kerala on 30th August, 3rd, 4th, and 5th September 2025," the Thiruvananthapuram Met Centre of the India Meteorological Department (IMD) said.
As the low-pressure system weakened, the intensity of rain Kerala has been receiving over the past two days also decreased. The southern state is only likely to witness scattered, intermittent rain in the coming days, weather experts were quoted as saying by Malayalam media reports. However, the possibility of this prediction going wrong and Kerala witnessing a sunny Thiruvonam day cannot be ruled out, the report added.
On Saturday, rain is reportedly being experienced in various places across all 14 districts of Kerala. The highest rainfall has been recorded in Kasaragod and Kannur districts, Manorama Online said in a report. In Kakkayam of Kozhikode district, 6,046 millimetres of rain has fallen in the last 100 days. Rain was recorded at Kakkayam station on 91 out of 100 days. Out of these, on 21 days, the rainfall was above 100 millimetres. On 22 days, the rainfall was between 50 and 99 millimetres. The highest rainfall in Kakkayam occurred on July 17, with 309 millimetres of rain.
KERALA WEATHER FORECAST FOR ONAM DAYS (Released on August 29):
- DAY 1 (29-August-2025): Rain or thundershower is most likely to occur at most places in Kerala and Lakshadweep.
- DAY 2 (30-August-2025): Rain or thundershower is most likely to occur at most places in Kerala and at many places in Lakshadweep.
- DAY 3 (31-August-2025): Rain or thundershower is most likely to occur at many places in Kerala and Lakshadweep.
- DAY 4 (1-September-2025): Rain or thundershower is most likely to occur at many places in Kerala and at a few places in Lakshadweep.
- DAY 5 (2-September-2025): Rain or thundershower is most likely to occur at many places in Kerala and at a few places in Lakshadweep.
- DAY 6 (3-September-2025): Rain or thundershower is most likely to occur at most places in Kerala and at a few places in Lakshadweep.
- DAY 7 (4-September-2025): Rain or thundershower is most likely to occur at most places in Kerala and at many places in Lakshadweep. Dakshina Kannada district administration has also declared a holiday for Anganwadis and schools up to the level of high school on Saturday.
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Meanwhile, heavy rain is falling in Rajasthan, Haryana, Gujarat, and Delhi. Rajasthan, which generally experiences less rain, is currently receiving abundant rainfall. The IMD on Saturday forecast heavy rain in the sub-Himalayan districts of the state till Monday morning owing to a favourable wind pattern and moisture incursion from the Bay of Bengal. It said the South Bengal districts will receive light to moderate rainfall with thunderstorms and lightning at one or two places for the coming one week till September 5.
Similarly, heavy rains continued to lash parts of the coastal and Malnad regions of Karnataka on Saturday, affecting normal life in Uttara Kannada, Udupi, Chikkamagaluru, Shivamogga, and Kodagu districts. In Honnavar taluk of Uttara Kannada, the Deputy Commissioner ordered a holiday for all anganwadis, primary, and high schools on August 30 as a precautionary measure in view of incessant rains expected during the day.